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Assessment of Vertical Ozone Profiles from INSAT-3D Sounder Over The Central Himalaya


Affiliations
1 Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India
2 Space Applications Centre, Jodhpur Tekra, Ahmedabad 380 015, India
3 Indian Institute of Remote Sensing, 4 Kalidas Road, Dehradun 248 001, India
4 National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States
5 Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
6 DDU Gorakhpur University, Gorakhpur 273 009, India
 

Vertical distribution of ozone has been obtained for the first time using INSAT-3D for the period 2013-2017 over the central Himalaya and validated utilizing balloon-borne observations from a high-altitude site in Nainital (29.4°N, 79.5°E, 1793 m amsl). The INSAT-3D retrieved ozone profiles captured ozone gradient and ozone peak altitude successfully, despite only one IR channel for ozone. This demonstrates the capability of the INSAT-3D Sounder in capturing the observed features, with a smaller bias in the stratosphere and somewhat larger bias in the troposphere. Total ozone column from INSAT-3D showed maximum difference of 8% with ozonesonde-derived total ozone column. Larger ozone bias in the lower troposphere could be attributed to lower reliability of regression coefficient and INSAT-3D channel constraints itself, whereas high variability near the tropopause is possibly due to low ozone, poor temperature retrieval near the tropo-pause and stratosphere–troposphere transport process in the Himalayan region.

Keywords

Ozone Profiles, Ozonesonde, Satellite Data, Vertical Distribution.
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  • Assessment of Vertical Ozone Profiles from INSAT-3D Sounder Over The Central Himalaya

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Authors

Prajjwal Rawat
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India
Manish Naja
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India
Pradeep K. Thapliyal
Space Applications Centre, Jodhpur Tekra, Ahmedabad 380 015, India
Shuchita Srivastava
Indian Institute of Remote Sensing, 4 Kalidas Road, Dehradun 248 001, India
Piyush Bhardwaj
National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States
Rajesh Kumar
National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States
Samaresh Bhatacharjee
Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India
S. Venkatramani
Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
S. N. Tiwari
DDU Gorakhpur University, Gorakhpur 273 009, India
Shyam Lal
Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India

Abstract


Vertical distribution of ozone has been obtained for the first time using INSAT-3D for the period 2013-2017 over the central Himalaya and validated utilizing balloon-borne observations from a high-altitude site in Nainital (29.4°N, 79.5°E, 1793 m amsl). The INSAT-3D retrieved ozone profiles captured ozone gradient and ozone peak altitude successfully, despite only one IR channel for ozone. This demonstrates the capability of the INSAT-3D Sounder in capturing the observed features, with a smaller bias in the stratosphere and somewhat larger bias in the troposphere. Total ozone column from INSAT-3D showed maximum difference of 8% with ozonesonde-derived total ozone column. Larger ozone bias in the lower troposphere could be attributed to lower reliability of regression coefficient and INSAT-3D channel constraints itself, whereas high variability near the tropopause is possibly due to low ozone, poor temperature retrieval near the tropo-pause and stratosphere–troposphere transport process in the Himalayan region.

Keywords


Ozone Profiles, Ozonesonde, Satellite Data, Vertical Distribution.

References





DOI: https://doi.org/10.18520/cs%2Fv119%2Fi7%2F1113-1122